Without knowing the SQL Statement and knowing what Access Paths are
available it is difficult to say anything.
In either way: There will be no index advices for derived and sparse
indexes, also there are no advises for EVIs with INCLUDE clauses.
When optimizing an SQL Statement you should first try to test if the same
result can be reached by using a different syntax.
If you cannot get a better performance with a different syntax then you have
to check if indexes are advised ... and with more experience you'll also be
able to know which derived and sparsed indexes and EVIs might help the SQL
statement to be better performed.
Mit freundlichen Grüßen / Best regards
Birgitta Hauser
Modernization ? Education ? Consulting on IBM i
"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training them
and keeping them!"
?Train people well enough so they can leave, treat them well enough so they
don't want to.? (Richard Branson)
-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Alan
Cassidy
Sent: Donnerstag, 5. Mai 2022 17:13
To: midrange-l@xxxxxxxxxxxxxxxxxx
Subject: Script script Run and Explain
I've looked around and can't find the answer for this.
I have clicked on Run and Explain in the SQL script Visual Explain tab, but
I can't find suggestions for indexes to improve performance. I was told it
does make suggestions. I ran one complex SQL statement there.
--Thanks
Alan
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
To post a message email: MIDRANGE-L@xxxxxxxxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit:
https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxxxxxxxx
Before posting, please take a moment to review the archives at
https://archive.midrange.com/midrange-l.
Please contact support@xxxxxxxxxxxxxxxxxxxx for any subscription related
questions.
Help support midrange.com by shopping at amazon.com with our affiliate link:
https://amazon.midrange.com
midrange.com
